why does my Toyota Highlander Fourth Generation (2020-present) traction control keep disabling

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and securely parked.
• Disconnect the battery before working on electrical systems for safety.

2. Inspect and Clean Wheel Speed Sensors

• Locate the wheel speed sensors on each wheel hub.
• Remove any dirt or debris that may be obstructing the sensors.
• Check the wiring harness for damage or disconnection.
• Reconnect any loose connections and ensure the sensors are properly mounted.

3. Check Brake Fluid Level

• Open the hood and locate the brake fluid reservoir.
• Inspect the fluid level; if low, top off with the manufacturer's recommended brake fluid.
• Check for any leaks in the braking system that could be causing fluid loss.

4. Test ABS System

• Using a multimeter, check the voltage at the ABS module.
• If the ABS system is malfunctioning, replace the ABS module or associated relays as necessary.

5. Inspect Traction Control Switch

• Locate the traction control switch on the dashboard.
• Ensure it is not stuck or damaged; if faulty, replace it with a new switch.

6. Verify Tire Condition and Pressure

• Inspect all tires for wear and damage.
• Use a tire pressure gauge to check and adjust tire pressures to the manufacturer's specifications.